<template>
  <div>
     <!-- 头部 -->
        <header class="header">
            <!-- 头部的第一行 -->
            <div class="top">
                <div class="container">
                    <div class="loginList">
                        <p>尚品汇欢迎您！</p>
                        <p v-if="!userName">
                            <span>请</span>
                            <!-- 声明式导航 to 属性 -->
                            <router-link to="/login" >登录</router-link>
                            <router-link class="register" to="/register" >免费注册</router-link>
                        </p>
                        <p v-else>
                            <!-- 声明式导航 to 属性 -->
                            <a> {{ userName}} </a>
                            <a class="register" @click="logout">退出登录</a>
                        </p>
                    </div>
                    <div class="typeList">
                        <router-link to="/center/myorder" >我的订单</router-link> 
                        <router-link to="/shopcart" >我的购物车</router-link> 
                        <a href="###">我的尚品汇</a>
                        <a href="###">尚品汇会员</a>
                        <a href="###">企业采购</a>
                        <a href="###">关注尚品汇</a>
                        <a href="###">合作招商</a>
                        <a href="###">商家后台</a>
                    </div>
                </div>
            </div>
            <!--头部第二行 搜索区域-->
            <div class="bottom">
                <h1 class="logoArea">
                    <router-link class="logo" to="/home">
                        <img src="./images/logo.png" alt="">
                    </router-link>
                </h1>
                <div class="searchArea">
                    <form action="###" class="searchForm">
                        <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" />
                        <button class="sui-btn btn-xlarge btn-danger" type="button" @click="goSearch">搜索</button>
                    </form>
                </div>
            </div>
        </header>
  </div>
</template>

<script>
export default{
    name:'Header',
    data(){
        return{
           keyword:'',
        }
    },
    methods:{
        goSearch(){
            // 第一种  字符串方式
            //this.$router.push('/search/'+this.keyword +'?k='+this.keyword.toUpperCase())
            // 第二种 模板字符串
            //this.$router.push(`/search/${this.keyword}?k=${this.keyword.toUpperCase()}`)
            // 对象的写法
            //this.$router.push({name:'search',params:{ keyword:this.keyword},query:{ k:this.keyword.toUpperCase() }})
            // params 传递的参数 是 '' 的写法
            //this.$router.push({name:'search',params:{ keyword:''|| undefined},query:{ k:this.keyword.toUpperCase() }})
            //this.$router.push({name:'search',params:{ keyword:this.keyword.trim()},query:{ k:this.keyword.trim().toUpperCase() }})
            if(this.$route.query){
                let location = {name:'search',params:{ keyword:this.keyword.trim() || undefined}}
                location.query = this.$route.query
                this.$router.push(location)
            }
        },
        //退出登录  需要向服务器发请求 清除 token 
       async logout(){
            try{
              // 如果退出成功 回到首页
              await this.$store.dispatch('userLogout')
              this.$router.push({name:'home'})
            }catch(err){
              alert(err.message)
            }
        }
    },
    mounted(){
      this.$bus.$on('clear',()=>{
          this.keyword = '';
      })

    },
    computed:{
       // 获取用户信息
       userName(){
           return this.$store.state.user.userInfo.name
       }

    }
}
</script>


<style lang="less" scoped>
 .header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;
            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;
                .loginList {
                    float: left;
                    p {
                        float: left;
                        margin-right: 10px;
                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }
                .typeList {
                    float: right;
                    a {
                        padding: 0 10px;
                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }
                }
            }
        }
        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;
            .logoArea {
                float: left;
                .logo {
                    img {
                        width: 175px;
                        margin: 25px 45px;
                    }
                }
            }
            .searchArea {
                float: right;
                margin-top: 35px;
                .searchForm {
                    overflow: hidden;
                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;
                        &:focus {
                            outline: none;
                        }
                    }
                    button {
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>
